Code Review Request for 7200306: SunPKCS11 provider delays the check of DSA key size for SHA1withDSA to sign() instead of init()

[Valerie (Yu-Ching) Peng]

Can someone please help review my fixes for 7200306: SunPKCS11 provider 
delays the check of DSA key size for SHA1withDSA to sign() instead of 
init()?

Native PKCS11 libraries don't seem to check the key during the 
initialization calls (triggered by initSign()/initVerify()).
Rather, it errors out during the subsequent update() calls. So, I added 
necessary key length checks.

Webrev:
http://cr.openjdk.java.net/~valeriep/7200306/webrev.00/

Thanks,
Valerie